Why does the excess capacity of the heat exchanger increase as the temperature rise of the heated medium increases?
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This post was last edited by hwb728 on 2017-2-24 09:42. I would like to ask everyone: why does an increase in the temperature rise of the heated medium result in an increased margin for the heat exchanger? Is this reasonable? Please refer to the image below. Why can’t the margin for the heat exchanger be calculated as clean divided by service? Which margins are taken into account in the calculations? (Dirty heat resistance? Dead zone? ) Everyone is welcome to share their insights and offer reasonable suggestions.
This post was last edited by sifangok on 2017-2-23 at 16:18; the temperature difference is large, resulting in greater uncertainty
Is this situation reasonable and normal?
The poster had better re-upload the picture; it’s completely unreadable
Thank you for the reminder; I’ll try uploading it again
It makes sense; the greater the variability, the greater the margin of safety, of course
I have a question: which value should be used for the variable?